Nylon solid braid is one of the strongest and most versatile fibers used for flagpoles. The wire core is an asset for internal poles due to its added strength. The length of halyard that is needed per pole is typically double the flagpole height. Example - The recommended length of halyard for a 15' pole is 30'. Contact our store at (716)681-2345 or email us at email@example.com if other size options are needed.